ceiling

Measurement of the height of the base of the lowest clouds

Instance of: general term

Overview

From Wikipedia, the free encyclopedia · Read full article · Text CC BY-SA 4.0

In aviation, ceiling is a measurement of the height of the base of the lowest clouds that cover more than half of the sky relative to the ground. Ceiling is not specifically reported as part of the METAR used for flight planning by pilots worldwide, but can be deduced from the lowest height with broken (BKN) or overcast (OVC) reported. A ceiling listed as "unlimited" means either that the sky is mostly free of cloud cover, or that the clouds are high enough not to impede visual flight rules (VFR) operation.

Overview

All data

8 statements · 25% with external sources · numbers in brackets are citations

Short name: HWU
1
Sources
1.kompendium.ivao-de.net/HauptwolkenuntergrenzeRetrieved 2024-02-24
View statement on Wikidata ↗
Facet of: meteorology
aviation
Different from: Plafond criterion used: descriptive page and disambiguation page have to be in different items · applies to name of subject: plafond

On other databases

2 identifiers linking ceiling across the web's reference databases

Data quality

statements

25%

externally sourced

Source last edited August 2, 2025. AIDB refreshes this page daily.

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AIDB. (2026). ceiling (Q1589822). Retrieved from https://aidb.si/e/ceiling-Q1589822